• 关键词：TiO₂  Zr  掺杂  光催化  罗丹明B

• 基金项目：河南省创新人才工程项目(教高[2001]513号);广东省自然科学基金团队项目(No.04205301);广州市科技计划项目(No.2005z3-D2081)

• 刘国光
• 1. 广东工业大学环境科学与工程学院, 广州 510006; 2. 河南师范大学化学与环境科学学院, 河南省环境污染控制重点实验室, 新乡 453007

• 张锋
• 河南师范大学化学与环境科学学院, 河南省环境污染控制重点实验室, 新乡 453007

• 谢友海
• 河南师范大学化学与环境科学学院, 河南省环境污染控制重点实验室, 新乡 453007

• 姚琨
• 河南师范大学化学与环境科学学院, 河南省环境污染控制重点实验室, 新乡 453007

• 牛新书
• 河南师范大学化学与环境科学学院, 河南省环境污染控制重点实验室, 新乡 453007

• 李红花
• 河南师范大学化学与环境科学学院, 河南省环境污染控制重点实验室, 新乡 453007

• 摘要：以钛酸丁酯,乙醇为原料,用固相合成法制备了Zr/TiO₂纳米颗粒,用XRD、TEM对其组成、颗粒大小、形貌进行了表征.通过对罗丹明B的降解反应,考察了Zr/TiO₂的光催化活性.结果表明,Zr/TiO₂为纳米颗粒,平均粒径为12.7nm左右,且颗粒均匀;掺杂金属离子Zr提高了TiO₂光催化效率,掺杂2.0%Zr的催化剂活性最高.Zr/TiO₂的光催化反应,首先是反应物在Zr/TiO₂表面发生吸附作用,然后进一步发生光催化降解.

• Abstract：TiO₂ nanoparticles were prepared by the Sol-gel method with the butyl titanate and alcohol as the starting materials, and then the Zr/TiO₂ nanoparticles were prepared by the solid reaction of TiO₂ and ZrOCl₂ ·8H₂O. The structure and crystal state of the powder were characterized by means of X-rays diffraction(XRD).The shape and size were analyzed with the help of transmission electron microscopy(TEM).The activity of the prepared photocatalysts were investigated by degradation reaction of Rhodamine B. The results showed that the Zr/TiO₂ nanoparticles were spherical with the mean grain size of 12.7nm, and its photocatalytic activity was much higher than that of pure TiO₂ particles. The optimum doping ratio of Zr to TiO₂ was 2.0%, at which the highest photocatalytic degradation rate of Rhodamine B under Zr/TiO₂ catalyst was measured. The photocatalytic reaction under TiO₂ is occurred with the adsorption of Rhodamine B on the surface of TiO₂ first.

• Key words：TiO₂  Zr  doping  photocatalysis  Rhodamine B

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